Which statement best describes progressive lenses?

Which statement best describes progressive lenses?

• A. They provide a single focal power suitable for all viewing distances
• B. They offer multiple focal powers with a gradual progression between them
• C. They use visible lines to separate viewing zones
• D. They are the thickest thin-lens option

Answer: (B)

Progressive lenses are designed to provide multiple focal powers with a smooth, gradual progression from one to the next. This means you can look through the upper part for distance, the lower part for near, and the mid-range for intermediate tasks, all without visible lines or abrupt changes. The seamless transition allows natural head and eye movements as you shift focus between sitting, computer work, and reading. This differs from single-vision lenses, which have one power for all distances, and from bifocals or trifocals, which have distinct zones separated by visible lines. The idea that progressive lenses are the thickest thick-lens option isn’t a defining feature and thickness varies with frame choice and prescription.

Progressive lenses are designed to provide multiple focal powers with a smooth, gradual progression from one to the next. This means you can look through the upper part for distance, the lower part for near, and the mid-range for intermediate tasks, all without visible lines or abrupt changes. The seamless transition allows natural head and eye movements as you shift focus between sitting, computer work, and reading.

This differs from single-vision lenses, which have one power for all distances, and from bifocals or trifocals, which have distinct zones separated by visible lines. The idea that progressive lenses are the thickest thick-lens option isn’t a defining feature and thickness varies with frame choice and prescription.